Korra: the rest of S3
Yeah, okay, that improved significantly from its very fumbly start. Once the villain group was in full swing and the mako/bolin korra/asami teams were rolling, everything worked out fairly okay. The action animation and direction was amazing, the battle and destruction of the Northern Air Temple, the second coup of Ba Sing Se, and the cliffside battle, all was some crazy shit.
(though it couldn't help screwing the pooch a little at the end with a little deus ex machina - all they had to do was establish beforehand the poison was metalic instead of Jinorra just kinda randomly knowing it? I guess she spirit-saw it or whatever but it's not very clear and just kinda pops out of nowhere.)
Zaheer is best character.